<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>阴影效果</title>
    <style type="text/css">
        div.shodow{
            position: relative;
            width: 200px;
            height: 100px;
            /* border: 1px solid lightblue; */
            background-color: lightgreen;
            border-top-left-radius: 100px;
            border-top-right-radius: 100px;
            /* inset outset */
            /* box-shadow: 20px 20px 10px lightcoral inset; */
        }
        div.shodow:hover{
            top: 30px;
            left: 30px;
            box-shadow: 20px 20px 10px lightcoral;
        }
    </style>
</head>
<body>
    <div class="shodow"></div>
</body>
</html>